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Tunisia: Tender issued for Hidra wastewater treatment plant

The National Sanitation Utility (ONAS) of Tunisia has issued a tender for the construction of wastewater treatment plant in Hidra in the governorate of Kasserine. 

Deadline: 11 March 2025

The works under this contract include the following tasks:

• The works of providing, installing and testing electromechanical equipment are assigned to all companies specialised in the field of electromechanical equipment,
• Civil engineering works are entrusted to companies specialising in civil engineering works having an approval for road works and various networks for Tunisian companies VRD 0 catégorie 4 at least or VRD3 catégorie 5 at least, or equivalent approvals for foreign companies according to the law of their native country.

In the case of participation in a group, the leader will be the Civil Engineering Company, which must have the approval requested by this Call for Tenders in fact for Tunisian companies or equivalent for foreign companies.

In the case of subcontracting:

• The civil engineering company can subcontract the equipment part according to a list of its subcontractors to be attached to the offer.

Check the original tender post on the EBRD website for the amount payable for provisional or bank guarantee for this tender.

Interested companies can obtain additional information at the address mentioned below during the following office opening hours.

Tunisia tender details

Companies wishing to participate in this call for tenders can withdraw the file from the Central Order Office at the headquarters of the national sanitation office located at 32 Rue Hédi Nouira 1001 Tunis and this (from Monday to Friday) against payment in the amount of three Hundred Dinars (TND300) non-refundable or its equivalent in convertible currency.

The technical offer and the financial offer are placed in two separate closed and sealed envelopes and in two copies (original and copy). These two envelopes, the provisional guarantee or the bank guarantee which replaces it, the administrative documents and supporting documents accompanying the offer will be placed in a third closed and sealed envelope indicating the reference of the above-mentioned call for tenders and its subject.

Any offer that does not include the provisional deposit or does not comply with the above-mentioned conditions will be rejected.

The envelopes containing the offers (technical and financial) must be sent in the name of the President Director General of ONAS by post and registered or by rapid-post or direct delivery against an acknowledgment of receipt and reach the order office. ONAS central located at 32 Rue Hédi Nouira 1001 at the address mentioned below no later than 11 March 2025 at 10am (local time in Tunis).

The period during which the tenderers will remain committed by their offers is 120 days from the day after the deadline for receipt of the tenders.

Tender documents can be viewed from the European Bank for Reconstruction and Development (EBRD) website.

Submit the bidding documents to

For the attention of ONAS CEO
32 Rue Hédi Nouira Tunis 1001 – Republic of Tunisia

Phone: (00216) 71 346100

Fax: (00216) 71 350 411

E-Mail: boc@onas.nat.tn